docs: def results_class_wise_metrics(self):
          """Class-wise metrics
  
          Returns
          -------
          dict
              results in a dictionary format
  
          """
  
          results = {}
          for event_label in self.event_label_list:
              if event_label not in results:
                  results[event_label] = {}
  
              results[event_label]['f_measure'] = self.class_wise_f_measure(event_label)
              results[event_label]['accuracy'] = self.class_wise_accuracy(event_label)
              results[event_label]['error_rate'] = self.class_wise_error_rate(event_label)
              results[event_label]['count'] = self.class_wise_count(event_label)
  
          return results